There's a song that's sung, everybody has hair, let me sing hairy for you...
After human evolution, the human body still retains some different types of hair, such as hair, sweat hair, nose hair, armpit hair, leg hair, and yin hair...
But have you found that most of the hairs are straight, except that 90% of the hairs below are curly, why?
There is a saying that after entering civilized society, human beings are covered by clothes, especially the invention of underwear, and the hair underneath is under the pressure of clothing for a long time, and it is easy to curl and will not be infinitely long.
In fact, this is not the case, whether the hair is curled or not is genetically determined.
In the round hair follicle, the hair can grow unimpeded, and the hair that grows is naturally straight. The hair follicle at si is oval, and the hair growth path is not so smooth.
Moreover, the fur lines at the si are striated and oblique, which are different from the fur of the hair.
Therefore, genetically speaking, it is determined that the hair underneath is curly, rather than straight.
If the shape of the hair follicle is flattered, the more curly the hair is.
下面的毛毛有什么作用？
1、减少摩擦
si处卷曲的毛发，在xo中，可以起到很好的缓冲作用，减少摩擦，避免因xo动作而损伤下体皮肤。
同时长出毛毛，也是X成熟的象征，有一定的男女调晴作用。
2、保护si处
si处的毛发，可以吸附灰尘汗液等，避免直接进入生zhi道内。特别是女性，生zhi器官构造特殊，可以起到很好的防护作用。
3、用来植发
别笑！我没有在跟你开玩笑！
植发的原理很简单，无非是把健康的毛囊组织移植到脱发的地方，这很好实现。
把si处的毛囊挖过去种在头皮上，成活率也很高，长出来的头发也很茂密。
